<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap 实例 提示信息</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/css/bootstrap.min.css">
  <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://cdn.staticfile.org/popper.js/1.12.5/umd/popper.min.js"></script>
  <script src="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/js/bootstrap.min.js"></script>
</head>
<body>


<div class="alert alert-success">
  <strong>成功!</strong> 指定操作成功提示信息。
</div>

<div class="alert alert-success">
  <strong>成功!</strong> 你应该认真阅读 <a href="#" class="alert-link">这条信息</a>。
</div>

<div class="alert alert-success alert-dismissible">
  <button type="button" class="close" data-dismiss="alert">&times;</button>
  <strong>成功!</strong> 指定操作成功提示信息。
</div>

<div class="alert alert-danger alert-dismissible fade show">


</body>
</html>